Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Poplar, Metropolitan Borough]
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TABLE VII (Contd,)
| Constituents | JULY | AUGUST | SEPTEMBER | OCTOBER | NOVEMBER | DECEMBER | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WATER | 46.11 mm. rain | 1.82 in. rain | 76.17 mm. rain | 3.00 in. rain | 83.41 mm. rain | 3.29 in. rain | 63.96 mm. rain | 2.52 in. rain | 9. 84 mm. rain | 0 39 in. rain | 65.71 mm. rain | 2.59 in. rain |
| Grains per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | Grams per 100 sq. metres | Tons per square mile | |
| TOTAL WATER- | ||||||||||||
| INSOLUBLE MATTER .. | 707 | 18.02 | 438 | 11.17 | 646 | 16.48 | 515 | 13.12 | 245 | 6.24 | 1195 | 30.47 |
| Soluble in CS2 | 4 | 0.10 | 8 | 0.20 | 7 | 0.17 | 5 | 0.13 | 5 | 0.13 | 8 | 0.20 |
| Ash | 607 | 15.47 | 357 | 9.09 | 571 | 14.56 | 443 | 11.31 | 182 | 4.63 | 1086 | 27.69 |
| Other combustible matter | 96 | 2.45 | 74 | 1.88 | 68 | 1.75 | 66 | 1.68 | 58 | 1.48 | 101 | 2.58 |
| TOTAL WATER- | ||||||||||||
| SOLUBLE MATTER | 276 | 7.05 | 304 | 7.75 | 442 | 11.28 | 320 | 8.15 | 354 | 9.03 | 657 | 16.75 |
| Ca++ | 34 | 0.87 | 30 | 0.77 | 54 | 1.38 | 29 | 0.74 | 36 | 0.91 | 49 | 1.24 |
| C1' | 25 | 0.64 | 18 | 0.47 | 33 | 0.84 | 32 | 0.81 | 33 | 0.84 | 16 | 0.40 |
| so"4 | 91 | 2.32 | 99 | 2.52 | 150 | 3.83 | 103 | 2.62 | 99 | 2.52 | 171 | 4.36 |
| TOTAL SOLIDS | 983 | 25.07 | 742 | 18.93 | 1088 | 27.75 | 834 | 21.28 | 599 | 15.27 | 1852 | 47.21 |
| Wt. of SO3 collected estimated on mg./100 Sq. cm./day (PbO2 cylinder) | 1.77 | 1.69 | 2.65 | 3.10 | 4.50 | 4.92 | ||||||